[Checkins] [zopefoundation/zope.interface] 11a1d0: Ensure Interface is the last item in the __sro__.

[Jason Madden]

  Branch: refs/heads/issue8
  Home:   https://github.com/zopefoundation/zope.interface
  Commit: 11a1d01945fd486ba63209f3358fd3313ff1e25f
      https://github.com/zopefoundation/zope.interface/commit/11a1d01945fd486ba63209f3358fd3313ff1e25f
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2020-03-17 (Tue, 17 Mar 2020)

  Changed paths:
    M CHANGES.rst
    M docs/README.rst
    M src/zope/interface/common/tests/__init__.py
    M src/zope/interface/interface.py
    M src/zope/interface/tests/test_interface.py

  Log Message:
  -----------
  Ensure Interface is the last item in the __sro__.

None of the elegant solutions mentioned in the issue worked out, so I had to brute force it.

Fixes #8